Daly's Spur

The Daly's Spur is a silica mine located in Beaverhead county, Montana at an elevation of 5,390 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Daly's Spur

Commodity

Primary: Silica

Location

State: Montana
County: Beaverhead
District: Blacktail Range Area

Land Status

Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Not available

Workings

Type: Surface

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Blacktail Mountains

Mineral Deposit Model

Not available

Orebody

Form: BLANKET

Structure

Type: R
Description: Area Of Thrust Faulting

Type: L
Description: Grey Sandstone Of Quadrant Formation Forms Cliff At The Site

Alterations

Alteration Type: L
Alteration Text: Weathering Has Weakened Sandstone

Rocks

Name: Quartzite
Role: Host
Age Type: Host Rock
Age Young: Pennsylvanian

Name: Quartzite
Role: Host
Age Type: Host Rock Unit
Age Young: Pennsylvanian

Analytical Data

Analytical Data: GENERAL ANALYTICAL DATA CONTAINED IN REFERENCES

Materials

Not available

Comments

Comment (Location): ALTITUDE APPROXIMATED

Comment (Deposit): USGS MAP INDICATES QUARRY AS INACTIVE, CHELINI DESCRIBES SOME WORK AS BEING DONE EACH YEAR BY UNKNOWN PARTY

Comment (Workings): QUARRY FACE RISES 150 FEET ABOVE THE FLOOR

Comment (Deposit): COMPONENTS OF SAMPLE ANALYSES DESCRIBED IN CHELINI, 1966 . FOLLOWING DESCRIPTION FROM BERG, 1974 . THERE ARE SUBROUNDED TO ANGULAR QUARTZ GRAINS 0.20 TO 0.30 MILLIMETERS IN SIZE. THERE IS LITTLE QUARTZ CEMENT AND AS A RESULT MUCH PORE SPACE EXISTS BETWEEN DETRITAL GRAINS

References

Reference (Deposit): CHELINI, J. M., 1966 , SOME HIGH - PURITY QUARTZ DEPOSITS IN MONTANA: MONTANA BUREAU OF MINES AND GEOLOGY BULLETIN 54 , P. 22 , 23

Reference (Deposit): BERG, R. B., 1974 , BUILDING STONE IN MONTANA: MONTANA BUREAU OF MINES AND GEOLOGY BULLETIN 94 P. 34

Reference (Deposit): USBM INF CIRC 7641, P 49

Reference (Production): CHELINI, J. M. SOME HIGH - PURITY QTZ. DEP. IN MONT. MONT BUR. OF MINES AND GEOL. BUL. 54 , P. 22

Principal Gold Districts of Montana

In Montana, 54 mining districts have each have produced more than 10,000 ounces of gold. The largest producers are Butte, Helena, Marysville, and Virginia City, each having produced more than one million ounces. Twenty seven other districts are each credited with between 100,000 and one million ounces of gold production. Read more: Principal Gold Districts of Montana.